void ICondition.Compile( MethodEmitter emitter )
{
// The object was safely cast to be the conditionals type
// If it's null, then the type cast didn't work...
emitter.LoadNull();
emitter.Compare( OpCodes.Ceq );
emitter.LogicalNot();
}
public override void Compile( MethodEmitter emitter )
{
emitter.Chain( m_Property );
bool inverse = false;
bool couldCompare =
emitter.CompareTo( 1, delegate()
{
m_Value.Load( emitter );
} );
if ( couldCompare )
{
emitter.Load( 0 );
switch ( m_Operator )
{
case ComparisonOperator.Equal:
emitter.Compare( OpCodes.Ceq );
break;
case ComparisonOperator.NotEqual:
emitter.Compare( OpCodes.Ceq );
inverse = true;
break;
case ComparisonOperator.Greater:
emitter.Compare( OpCodes.Cgt );
break;
case ComparisonOperator.GreaterEqual:
emitter.Compare( OpCodes.Clt );
inverse = true;
break;
case ComparisonOperator.Lesser:
emitter.Compare( OpCodes.Clt );
break;
case ComparisonOperator.LesserEqual:
emitter.Compare( OpCodes.Cgt );
inverse = true;
break;
default:
throw new InvalidOperationException( "Invalid comparison operator." );
}
}
else
{
// This type is -not- comparable
// We can only support == and != operations
m_Value.Load( emitter );
switch ( m_Operator )
{
case ComparisonOperator.Equal:
emitter.Compare( OpCodes.Ceq );
break;
case ComparisonOperator.NotEqual:
emitter.Compare( OpCodes.Ceq );
inverse = true;
break;
case ComparisonOperator.Greater:
case ComparisonOperator.GreaterEqual:
case ComparisonOperator.Lesser:
case ComparisonOperator.LesserEqual:
throw new InvalidOperationException( "Property does not support relational comparisons." );
default:
throw new InvalidOperationException( "Invalid operator." );
}
}
if ( m_Not != inverse )
emitter.LogicalNot();
}
public override void Compile( MethodEmitter emitter )
{
bool inverse = false;
string methodName;
switch ( m_Operator )
{
case StringOperator.Equal:
methodName = "Equals";
break;
case StringOperator.NotEqual:
methodName = "Equals";
inverse = true;
break;
case StringOperator.Contains:
methodName = "Contains";
break;
case StringOperator.StartsWith:
methodName = "StartsWith";
break;
case StringOperator.EndsWith:
methodName = "EndsWith";
break;
default:
throw new InvalidOperationException( "Invalid string comparison operator." );
}
if ( m_IgnoreCase || methodName == "Equals" )
{
Type type = ( m_IgnoreCase ? typeof( Insensitive ) : typeof( String ) );
emitter.BeginCall(
type.GetMethod(
methodName,
BindingFlags.Public | BindingFlags.Static,
null,
new Type[]
{
typeof( string ),
typeof( string )
},
null
)
);
emitter.Chain( m_Property );
m_Value.Load( emitter );
emitter.FinishCall();
}
else
{
Label notNull = emitter.CreateLabel();
Label moveOn = emitter.CreateLabel();
LocalBuilder temp = emitter.AcquireTemp( m_Property.Type );
emitter.Chain( m_Property );
emitter.StoreLocal( temp );
emitter.LoadLocal( temp );
emitter.BranchIfTrue( notNull );
emitter.Load( false );
emitter.Pop();
emitter.Branch( moveOn );
emitter.MarkLabel( notNull );
emitter.LoadLocal( temp );
emitter.BeginCall(
typeof( string ).GetMethod(
methodName,
BindingFlags.Public | BindingFlags.Instance,
null,
new Type[]
{
typeof( string )
},
null
)
);
m_Value.Load( emitter );
emitter.FinishCall();
emitter.MarkLabel( moveOn );
}
if ( m_Not != inverse )
emitter.LogicalNot();
}
